Patient compliance

Oral drug delivery systems most preferred option of administration for various drugs. Sustained release drug delivery system is the novel drug delivery system. The terms Sustained release, prolonged release, modified release, extended release or depot formulation are used to identified drug delivery systems that are designed to achieve or extend therapeutic effect by continuously releasing medication over an extended period of time after administration of a single dose. Sustained release dosage forms are designed to release a drug at a predetermined rate by maintaining a constant drug level for a specific period of time with minimum side effects. The basic rationale of sustained release drug delivery system optimizes the biopharmaceutical, pharmacokinetics, and pharmacodynamic properties of a drug in such a way that it’s utility is maximized, side effects are reduced and cure of the disease condition is achieved. Sustained release drug delivery is improved patient compliance due to less frequent drug administration, reduction of fluctuation in steady-state drug levels, maximum utilization of the of the drug, improved therapy and shorter treatment period.

  Rhinitis may be of allergic and non allergic origin and the reaction was typically associated to the nasal and ocular symptoms of the disease, allergic rhinitis was associated with a higher burden of asthma and sinusitis. It also affects multiple areas related to quality of life. Due to these reasons, there is a need to develop rapid action producing formulation to treat these allergic conditions. Levocetrizine is the active enantiomer of cetirizine. It is second generation, non-sedative antihistaminic drug with half-life of 8-10 hrs.The usual dose range from 5 to 10 mg. It undergoes extensive metabolism. The objective of the current study was to develop and optimize fast dissolving tablet of levocetrizine hydrochloride to improve bioavailability and increase drug release with rapid onset action. Key word: Fast dissolving tablet, Superdisintegrant, Rapid action, Patient compliance

Presently pharmaceutical industries are focusing on development of sustained release formulations due to its inherent boons. Sustained release dosage forms are designed to release a drug at a predetermined rate by maintaining a constant drug level for a specific period of time with minimum side effects. The basic rationale of sustained release drug delivery system optimises the biopharmaceutical, pharmacokinetic and pharmacodynamic properties of a drug in such a way that its utility is maximized, side-effects are reduced and cure of the disease is achieved. There are several advantages of sustained release drug delivery over conventional dosage forms like improved patient compliance due to less frequent drug administration, reduction of fluctuation in steady-state drug levels, maximum utilisation of the drug, increased safety margin of potent drug, reduction in healthcare costs through improved therapy and shorter treatment period. Sustained release products are designed to bring the blood level of a drug immediately to therapeutic concentrations by means of an initial dose portion called loading dose and then sustain this level for a certain predetermined time with the maintenance portion. The basic goal of sustained release is provide promising way to decrease the side effect of drug by preventing the fluctuation of the therapeutic concentration of the drug in the body and increase patient compliance by reducing frequency of dose. Key Words: Oral sustained release system, Matrix tablet, Patient compliance, Half-life